Reply To: How can I give different transmissivity with more than 3 wavelength region?

[Essence]

Hello,

For semi-transparent walls, Fluent automatically calculates the reflectivity and transmissivity from the refractive index of the material. You can input refractive index of the material on a per-band basis (choose refractive-band method) in the Material Create/Edit dialog box. Consequently the reflectivity and transmissivity are band-dependent.

For opaque walls, you can input band-dependent emissivity on the "Radiation" tab of the wall boundary condition dialog box.